FA478 increases the itinerancy pneumastic suction motion ,it makes the roving yarn evenness to improve.

FA478还增加了巡回式吹吸风装置，使粗纱条干均匀度明显提高。

Ratching in roving.

粗纱成形齿轮。

The thesis explain the production process and process specification of the raw material pretreatment, scutching. dressing. drawing. roving. spun yarn.

阐述了原料预处理、清花、梳棉、并条、粗纱、细纱的生产原则。

Fantasy yarns mixed to flat ones, never very thick, with different aspect: boucle, jaspe, vrille, hairy, felted, tweed, but never exaggerated.

较特殊的纱线，主题中并无粗纱，纱线外有同的变化：小圈圈、异色合股、螺旋状钮结、多毛、缩绒等，但都会有太夸张的表现。

Used for rocking cottonwool and spun silk yarn into sliver and rocing with a certain length in order it measure its evenness.

用于摇取棉、毛、绢等条子粗纱成一定长度，以测定其均匀度。